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United States Patent |
5,733,127
|
Mecum
|
March 31, 1998
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Touch perceptible floor plan map and method for use
Abstract
Device and method of employment thereof relating to tactile map of a
bathroom or other area of interest for use by visually impaired persons,
comprising tactile symbols emplaced upon a plaque or underlying surface
such as a wall or door proximate the area.
Inventors:
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Mecum; Robert Charles (5202 Rustling Oaks La., McFarland, WI 53558)
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Appl. No.:
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431447 |
Filed:
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May 1, 1995 |
Current U.S. Class: |
434/113; 40/585 |
Intern'l Class: |
G09B 021/00 |
Field of Search: |
434/112,113,72,73,79,80,152
40/585,622,620
116/205
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References Cited
U.S. Patent Documents
2523828 | Sep., 1950 | Howe.
| |
3659353 | May., 1972 | D'Agrosa.
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4385586 | May., 1983 | Schriever.
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4401050 | Aug., 1983 | Britt et al.
| |
4679342 | Jul., 1987 | Wilson | 40/616.
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4880384 | Nov., 1989 | Murphy.
| |
5246757 | Sep., 1993 | Condon et al. | 428/40.
|
5438781 | Aug., 1995 | Landmann.
| |
Foreign Patent Documents |
3604609 | Aug., 1987 | DE.
| |
Other References
"`Tactile` Maps Will Help Blind Get Around in D.C.", Beck, Jody, Washington
Star Staff Writer, Washington Star (Newspaper), p. B2, Mar. 3, 1975.
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Primary Examiner: Smith; Jeffrey A.
Attorney, Agent or Firm: Bonneville; Loyd W.
Claims
I claim:
1. A tactile map comprising
a plaque; and
a plurality of attachable tactile symbols;
the plaque further comprising;
an observable surface comprised of pegboard; and
a backside disposed opposite the observable surface; each of the attachable
tactile symbols comprising
a face;
perimeter walls;
an underside; and
at least one peg disposed so as to project from the underside and of
diameter sized for attachment by insertion into the pegboard;
whereby the underside of the symbols may be attached to the observable
surface of the plaque and disposed in positional relationships to one
another representing a particular area of interest including objects
therein and such that every member of a given class of objects is
represented by a distinct one of the tactile symbols and each class of
objects is represented, respectively, by a different one of the tactile
symbols, whereby following such attachment and disposition, one may by
means of tactile observation of the positional relationship of the
symbols, become informed of the layout of the area represented and the
respective positional relationships of objects therein.
2. The tactile map described in claim 1 further comprising an attachable
tactile key of definitions for the tactile symbols, the key comprising
a key face;
perimeter key walls; and
a key underside;
the key further comprising means of communication in one of:
braille; and
lettered narrative;
the underside of the key further comprising a plurality of pegs of diameter
sized for attachment by insertion into the pegboard and disposed so as to
project from the underside of the key;
whereby the underside of the key may be attached to a selected portion of
the observable surface of the map separate from the tactile symbols and
disposed thereon separate from them, such that confusion with them is
avoided;
whereby one may by means of tactile observation of the key, become informed
of the meaning of the respective classes of tactile symbols.
3. A method for informing visually impaired persons of the layout of a
particular area of interest and the respective positional relationships of
objects therein comprising:
emplacing upon a plaque comprising
an observable surface comprised of pegboard; and
a backside disposed opposite the observable surface;
a plurality of attachable tactile symbols, each comprising
a face;
perimeter walls;
an underside; and
at least one peg disposed so as to project from the underside and of
diameter sized for attachment by insertion into the pegboard;
disposing the tactile symbols to represent the objects within the area of
interest wherein the symbols depict the objects in a representative manner
such that their positional relationships to one another, the angles and
distances of separation between them, comprise those concerning the
objects, such that their positional relationships comprise a tactile map
of the area wherein every member of a given class of objects is
represented by a distinct one of the tactile symbols and each class of
objects is represented, respectively, by a different one of the tactile
symbols,
whereby one may by means of tactile observation of the positional
relationships of the symbols, become informed of the layout of the area
represented and the respective positional relationships of objects therein
.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
Objects for tactile communication to persons of impaired vision
2. Description of the Prior Art
Recognition of the particular needs of a blind person in public buildings,
parks, arenas or other places has become an increasing priority in our
society. Whether accompanied by another in such a place or not, intimate
familiarity with the area's spacial configuration and the relative
placement of furnishings and fixtures within it are considerably useful to
a blind person. This is especially true of public restrooms in instances
in which it is cumbersome for the accompanying attendant to enter with the
blind subject as where the two persons are of different sex. When a blind
person enters a restroom for the first time, he or she is relegated to
feeling along the walls, partitions and fixtures themselves in order to
use the facility. Those difficulties are obviated if a readable
representation of the interior of the room, a tactile map of the restroom,
is available. For other areas of concern to a blind person as well, that
sort of area plan would be similarly useful. Such a map must have its
subject matter embossed upon or cut into its surface so that a blind
person can interpret the shape of the room or area and the relative
placement of fixtures or other objects within it by what is sometimes
referred to as palpation--that is, by tactile observation, or means of
touch perception or sensing.
Embossments in braille as a means of communication to a blind person by way
of palpation have been widely known in literature format and similar media
for more than a century. Elevator control panels in public buildings
provide an example of such use in signage. More recently, communication of
that sort is being accomplished employing numerals or alphabetic letters
constructed in what is sometimes called bold relief or raised fashion.
Prior art discloses as references U. S. Pat. No. 4,679,342 issued to
Wilson and U.S. Pat. No. 5,246,757 issued to Condon and others. The first
of those two consists of a surface bearing either cutout or embossed
letter or numerical indicia matching and overlying otherwise solely visual
representations which had been emplaced on a control panel without regard
to blind persons. The other comprises signage requiring, among other
things, a type of porous material suggested by the inventors to be
optimally suitable to heat and vacuum molding techniques. Aside from the
fact that it addresses only words and numerals as communicable symbols,
the Wilson device is limited to recharacterizing existing signage or other
forms of panelled communication such as a household appliance control
device from nontactile to tactile. Although the Condon patent adds
"graphic, including pictures, symbols, logos and the like" and numerals in
its definition of alphanumeric characters, neither that nor the Wilson
patent addresses spacial orientation or locator communication such as that
conveyed by the map or floor plan characteristics embodied in the present
invention (1). Furthermore, it is unclear from the Condon patent what is
actually meant by the term "graphic", since the logic of its use is
circular therein. While the term is specified as part of the definition of
alphanumeric in the disclosure, it is used in the claims to comprise in
turn characters which are alphanumeric. An attempt to define a word in
terms of the word itself fails as a true definition. For both reasons,
references to "graphic" in the Condon patent do not preempt the shapes
applicant employs herein. Concerning the first of those reasons, it is the
map feature of applicant's invention (1) summarized ante, that renders
novelty to it.
SUMMARY OF THE INVENTION
The present invention (1) is both a useful device in and of itself as well
as a method by which it may be configured, assembled and employed to
fulfill its objectives. The device (1) is a map of an area of interest to
an observer, such as a blind person, who might otherwise experience
difficulty or inconvenience in locating himself or herself with reference
to that area and finding his or her way through and about it. The area of
interest might, for example, be a public bathroom, interior of a building
complex or a park. In the claims and otherwise throughout this
specification, the terminology is sometimes shortened merely to "area".
The map (1) is mounted at a place near its entrance. In the case of a
public bathroom, it would be mounted either upon its door or upon the wall
near the entrance. It is tactile in configuration, having as tactile
symbols (2) for it either embossments (3) upon or cutouts (4) within the
observable surface of a plaque (5, 25) or underlying surface (6, 125) and
is accordingly observed by means of palpation of the symbols (2, 103). The
phrase "observable surface" is consistently recited in the claims as the
portion of the plaque (5, 25) palpated by the observer. As that phrase
suggests, that portion of the plaque (5, 25) is the one which, following
the device's (1) installation, is oriented in the direction of the
observer, or "user" as occasionally referred to herein. The shape of the
surface of a symbol (2, 103) exposed toward the person for observation
must consistently represent a given object of interest within the area.
The symbols (2, 103) must also be arranged so as to represent the
positional relationships of the objects of interest with reference to one
another. Thus, by palpating the map (1), the observer may become informed
of the general layout of the area and the location of objects of interest
within it.
The device (1) may be of one part construction comprising both symbols (2,
103) and plaque (5, 105); may be an assemblage of separate parts comprised
both of the individual symbols (2, 103) and the underlying plaque (5, 25)
to which they may be attached; or may be an arrangement only of the
individual symbols (2, 103) emplaced upon an existing background surface
(6, 125).
Because the layout of one particular area of interest will in many
instances differ from that of another, it is readily recognized that there
can be no single configuration to the device (1) itself. It has,
therefore, been claimed not solely as a device (1) but also as a method of
fulfilling its objectives. Considered as a method of assembly, the map (1)
may, thus, be prepared to take into account individual differences in
layout of a particular area of interest and the positional relationships
of objects within it.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1-13 represent various views of a generally rectangular embodiment of
the invention (1). They are, respectively: FIG. 1--perspective; FIG.
2--face; FIG. 3--cross section oriented along line 3--3 of FIG. 2; FIG.
4--cross section oriented along line 4--4 of FIG. 2; FIG. 5--cross section
oriented along line 5--5 of FIG. 2.
FIGS. 6-13 represent perspective views of an assortment of a typical
variety of tactile symbols pegged tactile symbols (103) bearing pegs (28)
upon their undersides (23) for attachment into a pegboard surface (25 FIG.
18, discussed ante). Symbols shown in the drawings to be without pegs
(28), are provided reference numbers which result by subtracting 100 from
that indicated for each when pegged (103). Unpegged embossed symbols (2,
3), therefore, have numbers (3), (9-11) and (13-19) and they are thus
shown in FIGS. 1-5. Examples are: An unpegged rectangle with a wheel atop
it (10), a toilet with wheelchair access; an unpegged rectangle with a
circular or ovoid well cut into its surface (11), a washbasin; an unpegged
rod-like extension of various lengths (13), a wall section in general; an
unpegged rod-like extension of relatively great length near the perimeter
of the map (14), a perimeter enclosure; an unpegged rod-like extension of
relatively shorter length in areas within the perimeter (15), an interior
area division or separater; a simple unpegged rectangle (16), a toilet; an
unpegged triangle (17), a urinal; an unpegged small cylinder (18), a roll
of toilet paper; a relatively longer unpegged cylinder (19), a hand towel
rack or disposer or an electric hand dryer; and a relatively short
unpegged rod-like extension (27), a door. Similarly, the elements of a
symbol such as the face (7, 107), the perimeter walls or sides (8, 108) or
underside (12, 112) are numbered to reflect this pegged or unpegged
difference. The pegged symbols (103) included in FIGS. 6-13 are depicted
as follows: FIG. 6--cloverleaf shape representing an electric fan switch
(109); FIG. 7--rectangle with wheel-like structure atop representing a
toilet accessible by and suitable for a disabled person (110); FIG.
8--rectangle with ovoid well cut into its surface representing a washbasin
(111); FIG. 9--two rod-like extensions representing perimeter segments for
area of interest or enclosure (114); FIG. 1O--three rod-like extensions
representing area division segments of the interior of the area of
interest such as for stalls (115), the reference number (113) having
application to both of those types of extensions; FIG. 11--two simple
rectangles representing toilets (116); FIG. 12--three triangles
representing urinals (117); FIG. 13--three small cylinders representing
toilet paper rolls (118) a lengthened cylinder representing a hand towel
roll or dispenser or an electric hand dryer (119 and FIG. 19); FIG. 14--a
key (20) to the meaning of the symbols; FIG. 15--the underside of an
unpegged coverleaf symbol (9), representing a fan switch and the
underlying surface upon which it is to be emplaced; FIG. 16--a plaque upon
which cutouts (4) have been formed showing those for a washbasin and two
urinals (11 and 17, respectively); FIG. 17--an unpegged key underside
(22); FIG. 18--a plaque (5) of pegboard (25); FIG. 19--a relatively long
pegged cylinder (19), representing a hand towel rack or disposer or
electric hand dryer; FIG. 20--a portion of a pegged key (120); FIG.
21--The underside of a pegged triangular symbol (117), representing a
urinal, and the underlying pegboad surface (125) upon which it is to be
emplaced.
DESCRIPTION OF THE PREFERRED EMBODIMENT
References are made in the claims and otherwise throughout this application
to various forms of the words "tactile" and "palpable". The use of any of
those variations herein means that a particular thing is capable of being
observed through sense of touch; feeling it with one's fingers so as to
ascertain its shape. Consistent with that definition, "Tactile
observation" means observing an object "palpably". The term "map" as
applied to the invention (1) means that observations of its features
permit one to determine his or her own location and devise a route in
relation to certain reference points in the area represented. In the
instance where the map (1) depicts an interior area such as a bathroom, it
may be thought of as a floor plan. The "map" portion of the phrase
"tactile map" (1) is used instead of "floor plan", however, because of the
invention's (1) possible application to outdoor areas such as parks and
playgrounds.
Maps in general depict features which represent objects in a particular
"area of interest", a term occasionally shortened herein to "area". The
positional relationships of the map features to one another represent the
positional relationships of objects of interest within that area. The
terminology used in the claims to describe the invention's (1) map
features is "tactile symbols" (2, 103), occasionally shortened to just
"symbols" (2, 103). In the interest of more precisely defining the concept
of a map's representation of objects of interest and their relationship to
one another, one might consider as an example the positional relationships
of three objects within a given area. If those three objects were properly
depicted in that representative manner, the map would display for
observation three respective symbols between all of which the angles and
distances of separation would in a representative sense approximate those
concerning the objects. Such maps are usually characterized as being more
or less "to scale", if not exactly so. The claims employ formalized
terminology to describe that relational concept by requiring that every
member of a given class of objects be represented by a distinct one of the
tactile symbols (2, 103) and each class of objects be represented,
respectively, by a different one of the tactile symbols (2, 103). The
classifications themselves are discussed further ante.
For sighted persons, those who can see, a conventional paper map upon which
the features are merely printed, such as one for highways, accomplishes
the desired objective of representing the positional relationships of
objects within an area of interest. Applicant's invention (1) differs from
conventional maps in that its features are displayed thereon in a way
which can be observed by palpation and, therefore, may be relied upon by a
blind person. All of the embodiments of the invention (1) are, thus,
"tactile" ones and that term is accordingly used in conjunction with the
word "map" as part of the invention's (1) name throughout the claims. In
other parts of this specification, the expression "tactile map" (1) may be
shortened to just "map" (1).
The invention (1) is made tactile in either of two ways. One way is by
means of "embossments" (3) upon the "plaque" (5, 25) thereof. As used in
the claims, the word "plaque" (5, 25) merely means a base upon which
symbols are formed and is distinguished in meaning from the underlying
wall or other surface (6, 125) upon which an embodiment of the invention
(1) comprising a plaque is mounted. Various ways in which the plaque (5,
25) may itself be configured or selected are discussed further ante.
Embossments (3) are symbols (2, 103) which may be thought of as rising
outward from the plaque (5, 25) toward the observer in bold relief.
The other way the invention (1) can be made tactile is by means of
"cutouts" (4) into the plaque (5) thereof. As used in the claims, that
word means that the symbols are depressions, wells or sculpted out
carvings in the plaque (5). Examples of cutouts (4, specifically 11 and
17) are shown in FIG. 16. Both the embossment representing a washbasin
(11) and that representing an electric fan switch (9) have cut into their
faces features configured like cutouts (4). Whether it is an embossment
(3) or a cutout (4) that is under observation, one may by means of
palpation ascertain the shape of the map symbol (2) portrayed. As between
embossments (3) and cutouts (4), the former are the preferred choice. Some
blind persons, particularly some who have been afflicted with diabetes,
have little or no touch sense in their fingertips. They might successfully
interpret an embossment (3), however, by employing more than one finger or
by sensing with a portion of the finger other than the tip itself. For
them, embossments (3) are more accessible than cutouts (4).
The term "emplaced" is occasionally used in this application to describe
the symbol's (2) being caused to become constructed upon the plaque (5),
whether as an "embossment" (3) or a "cutout" (4).
Objectives of the invention (1) are stated in this application to include
one's ability in using it to become informed both of the "layout of the
area represented" and the "respective positional relationships of objects
therein". Becoming informed of the "layout" of the area of interest merely
means discovering or ascertaining the overall way in which the area is
oriented and arranged; whether it is generally rectangular as opposed to
square or L shaped; whether it extends predominantly in a longitudinal
direction from the direction of the entrance or instead, in a lateral one
therefrom; whether, if the area of interest is a public bathroom, the
toilets or other fixtures are to the left of the entrance as opposed to
the right; the direction in which the stall doors open; and other such
orientation characteristics. Becoming informed of the "respective
positional relationships of objects" in the area of interest refers to the
map's (1) capability by reason of the arrangement of the respective
symbols (2, 103), again in the case of a public bathroom, to inform one of
the location of the washstands with respect to the urinals or ascertain
the placement of other objects of interest therein relative either to each
other or to the general layout.
The mere arrangement of the symbols (2, 103) with respect to one another is
not the sole determinant concerning this second aspect of what might be
learned from palpating them. The phrase "tactile symbols" (2, 103) is a
commonly understood one meaning in part that they are so shaped that one
may by means of palpation ascertain differences between them. Whether the
symbols (2) are embossments (3) or cutouts (4), discussed supra, they
comprise three dimensions. The surface exposed directly to the observer,
referred to as the "face" (7, 107) thereof in the claims, may be the only
one made readily distinguishable by tactile means. The phrase "tactile
symbols" (2, 103) is generic in character in the sense that it may include
a face (7, 107) shaped like alphabetic letters (See lettered narrative
(30) in FIG. 14); numbers; braille dot systems (29); commonly recognized
elementary geometric forms such as squares, circles, triangles,
rectangles, ovals and elipses irregularly shaped objects which may either
be a combination of such commonly recognized geometric shapes or in a
configuration not resembling any of them; and shapes which to a greater or
lesser extent resemble or mimic in a miniaturized fashion those of the
objects they represent. Such mimicry may, thus, portray the object of
interest very exactly or may do so only in a stylistic sense. All of the
foregoing are symbols (2, 103) presenting a face (7, 107) to the observer.
However, three dimensional configurations for which the tactile portions
include not only the face (7, 107) but the perimeter walls (8, 108) as
well may be employed in the invention's construction. Thus, tactile
surfaces might disclose to the observer shapes such as those of cubes,
spheres or pyramids of a given number of sides; or three dimensional
shapes comprising a combination of configurations such as egg-shaped,
cylindrical or squared on the ends but rectangular longitudinally. Common
experience teaches that all of such symbols (2, 103) are "tactile". To
confer "tactile" character upon a symbol (2, 103), however, does not
require that it be limited to any of those arbitrary shapes. Any tactile
three dimensional shape one may devise may be emplaced upon the plaque (5,
25). A cube is no more suitable to represent a toilet than would be a
shape oriented to expose a face (7, 107) to palpation of the circular end
portion of a cylinder, a multi-sided pyramid or any other three
dimensional shape. To meet this part of the test of palpability, it is
only necessary that the observer be able to understand the symbol's (2,
103) shape. The shape must, thus, be a readily recognizable one not easily
confused with another.
While it has been thus pointed out that in making the invention (1), one
may configure the symbol (2, 103) in any shape which may arbitrarily be
designated to represent a given object of interest within the area
represented, there are advantages in preparing symbols (2, 103) shaped to
mimic to a degree the objects of interest they represent or relate to.
Thus, in a public bathroom setting, a three dimensional configuration
having an exposed tactile face (7, 107) in the shape of a four-leaf clover
(9, 109) might be recognized to represent a fan switch because the
symbol's (2) shape resembles the blades of a fan. As depicted in FIGS.
6-13, one (110) symbol (2) has the shape of a cube with the three
dimensional shape of two concentric circles lying atop it with a small
pip, or protrusion, in the center of the two circles. The configuration of
the shape lying atop the cube is to some degree reminiscent of a wheel
lying upon its side with the tip of its axle protruding from its center.
That symbol (110) was deliberately configured to represent a toilet having
wheelchair access. One (111) of the symbols (2) disclosed in FIGS. 1, 2
and 8 is that of a three-dimensional rectangle with an oval cut out from
its face. That symbol's (111) shape was deliberately configured to
resemble a washbasin. The same is true of the unpegged symbols (2), (9-11
and 13-19) shown in FIGS. 1-5, whose reference numbers, as indicated,
supra, are arrived at merely by subtracting 100 from those indicated in
FIGS. 6-13 and 19.
To fulfill the invention's (1) objectives, however, each "tactile symbol"
(2, 103) must represent a given object of interest consistently and be
distinguishable from every other shape emplaced (2, 103) which represents
a different object of interest. Thus, one would not emplace a triangle
(17, 117) to represent a first urinal and a simple rectangle (16, 116) to
represent a second one; and one should select shapes for urinals which
resemble as little as possible those selected for washstands. Accordingly,
the claims require such consistency concerning a given "class" of symbol
(2) employment, discussed supra.
In some embodiments of applicant's invention (1), manufacture is from a
single piece. Whether they are embossments (3) or cutouts (4), the map's
tactile symbols (2), any key (20, discussed ante) and the plaque (5) upon
which they are emplaced may be carved from one piece of wood or cast as a
single piece from a metal or plastic mold. Situations in which this
one-part embodiment may be employed are discussed in more detail ante.
In other embodiments of the invention (1), the plaque (5, 25) and the
"tactile symbols" (2, 103) are made of separate parts. Any included key
(20, 120) may either be part of the plaque (5, 25) or separate from it.
Situations in which such an embodiment of separate parts may be employed
are also discussed in more detail ante. To make an embossed (3) embodiment
of the invention (1) from separate parts, three dimensional block-like
pieces shaped as described supra and any separately included key (20, 120)
are attached to the plaque (5, 25). Attachment of unpegged symbols (2, 3)
may be accomplished upon what the claims designate as the symbol's
"underside" (12, 112) by means of welding, bolting, stapling, applying an
adhesive, or by other aesthetically acceptable fastening means known in
the prior art. Pegged symbols (103) may also be so fastened. As mentioned
supra, some embodiments of the invention are constructed so that the
symbols in general (2), regardless of whether or not they are pegged, are
separate from the plaque (5, 25) or underlying surface (6, 125) requiring
their emplacement thereon. Claims referring to those embodiments differ
from others by omitting references to "embossments" (3) and "cutouts" (4)
and include as part of the symbol's (2, 103) elements a "face" (7, 107),
"perimeter walls" (8, 108) and the attachable "underside" (12, 112). In
those embodiments in which the invention (1) is not of one-part
construction but is without a plaque (5, 25) upon which the symbols (2,
103) would otherwise be attached, a portion of a wall, post, door or other
underlying surface itself (6, 125) proximate the area of interest may
serve in lieu of a "plaque" (5, 25) as the surface upon which the symbols
(2, 103) are emplaced.
Employed as a representation of a public bathroom, applicant's invention
(1) would represent the location of partitions, walls, doors, toilets,
washbasins, urinals, toilet paper, hand towel paper roll and any other
objects of interest therein. Indeed, it is probably for public bathrooms
that a tactile map (1) would find its most valuable application.
Each object of interest is consistently represented by a distinctly shaped
symbol (2, 103). Even an illiterate or one of foreign tongue can,
therefore, use the device (1). The objects of interest the symbols (2,
103) represent are alluded to throughout the application. In the
embodiments depicted, some of the "tactile symbols" (2, 103) are of
arbitrarily assigned three dimensional shapes having faces (7, 107) in the
shapes of squares or rectangles (16, 116), circles (10, 110, showing them
atop a rectangle or square) and triangles (17, 117). Others are
distinguishable not by their faces (7, 107) but by the entirety of their
structure. Those include the cylinders (18, 118, 19, 119) representing the
toilet paper rolls and the hand towel roll, dispenser or electric hand
dryer, respectively. Still others are distinguishable because their shape
mimics that of the object they represent. Among those are the cube with
the wheel lying atop (10, 110), representing a wheelchair accessible
toilet; and the cloverleaf shaped symbol (9, 109), representing a fan
switch. Thus, there are three variations of tactile symbols (2, 103) in
the same embodiment. All, however, fall within the commonly understood
terminology of "tactile symbols" (2, 103).
Some embodiments of the invention (1) have a key as part of their
structure. The key is a part of the map (1) upon which a chart is
displayed comprising a list of the symbols (2, 8-11, 108-13-19, 113-119)
and opposite and in proximity to them are briefly designated the object of
interest the symbol (2, 103) represents. Thus, the key (20, 120) provides
definitions for the symbols (2, 103). For example, for a simple rectangle
(16, 116), the key might indicate that a toilet is thereby represented.
The key (20, 120) may be made in the form of an embossment (3) or a cutout
(4). In the same way that a tactile symbol (2, 103) has a face (7, 107),
perimeter walls or sides (8, 108) and an underside (12, 112), so too does
a key (20, 120) have a key face (21, 121), perimeter key walls (22, 122)
and a key underside (23, 123), all of which are disposed in the same
relative manner as their equivalent tactile symbol (2, 103) elements.
Without particular edification, one would not be expected to know that a
symbol (2, 103) having a face (7, 107) shaped like a simple rectangle (16,
116) represents a toilet or that a face (7, 107) shaped like a triangle
(17, 117) represents a urinal. To the degree that an association between a
certain symbol (2, 103) and an object of interest it represents is not
widely recognized, the invention's inclusion of a key (20, 120) is
preferred. In most cases, definition in terms of braille (29) would be an
appropriate type of key (20, 120), although other means of key (20, 120)
communication might be desired. On the one hand, there are many blind
people who cannot read braille. On the other, there are many partially
blind people for whom the interpretive key (20, 120) could appropriately
express what is referred to in the claims as "lettered narrative" (30).
That terminology means expression in written word language. A key (20,
120) might also contain both lettered narrative (30) and braille (29). In
either event, a blind person would in using the device (1), palpably
review the key (20, 120) if present or, if not, merely the contents of the
map (1) itself.
To the extent the symbols (2, 103) are shaped like the objects they
designate and, thus, mimic them in miniaturized fashion, no key (20, 120)
to symbol (2, 103) representation would be necessary. To the extent the
symbols (2, 103) are simple enough to be easily interpreted or become
universally recognized and popularized, whatever their design, the
requirement for an interpretive key (20, 120) is minimized. Omission of
the key (20, 120), if justified in other respects, reduces the risk of the
user's confusion by removing what might otherwise be too many objects to
feel and interpret. Certain instances of standardization are featured in
the Americans with Disabilities Act (ADA). FIGS. 1-13 are all examples of
restroom devices upon which keys (20, 120) have been omitted. However,
while an interpretive key (20, 120) may be unnecessary where a restroom is
concerned, reference to the particular sex the restroom is designated for
is generally appropriate. To that end, FIG. 2 depicts at the foot of the
device (1) the word "MEN" in braille and an embossed symbolic male figure
(24). That piece (24) may also have one or more pegs (28) constructed upon
it for attachment upon a pegboard (25).
The means by which one may learn the layout of an area of interest and the
respective positional relationships of the objects of interest therein may
be considered a method or process.
For enclosures which are more or less standard in size, configuration and
in the arrangement of their fixtures, the device (1) may be mass produced
at a plant and shipped complete to the site of placement. Examples include
bathrooms on airplanes, trains or other transportation means. Although
many of these are sufficiently small to allow one to find his or her way
without a map or floor plan, it is reasonable to expect that blind persons
would prefer to reduce touching of possibly contaminated fixtures or other
structures to a minimum. Furthermore, for the sake of the blind, each
armrest or other convenient locale on an airplane or train might contain
uniform signage designating the bathroom's location. Many office and other
commercial buildings standardize the size and configuration of bathrooms
throughout the overall structure. Whether the concern is with such
bathrooms or with other areas which might be uniform in design and layout,
the device (1) may be conveniently preformed in manufacture. Thus, hotel
and motel rooms are themselves frequently of uniform plan and for some of
them, that uniformity is expressed throughout the entire world.
There are numerous instances, however, in which such floor plan uniformity
does not exist. In the case of bathrooms, this is true of a building in
which each one differs from another in shape and fixture arrangement. It
would also be true of multiple areas other than bathrooms in many
commercial or governmental buildings where for example, in the case of a
courthouse, each courtroom has a different layout; or in the case of a
performing arts center where each concert hall or theater is distinctly
designed. In those cases of nonuniformity, it is best to permit the
builder to assemble the device (1) at the site. In one embodiment,
symbolic pieces for such use (8-11, 108-111, 13-19 or piece 24 as in FIG.
2) such as those depicted in FIGS. 6-13 permit assembly of the map at the
site by fastening them to the plaque (5, 25) or underlying surface (6,
125) or, as might be appropriate in a bathroom for a symbol representing a
toilet paper roll (18, 118), one representing a hand towel roll or
dispenser or an electric hand dryer (19, 119) or one representing the
switch for an electric fan (9, 109), by fastening them not to the plaque
(5, 25) or underlying surface (6, 125) but to the sides (8, 108) of the
walls of the rod-like interior area divisions (13, 113), such as those for
the stalls, which are themselves so fastened in turn to the plaque (5, 25)
or underlying surface (6, 125). If pegboard (25) is used as the plaque (5)
or happens to be comprised in the underlying surface (6), it would be more
convenient to attach symbols (2) comprised of pegged fixtures (103)
directly into it. For embodiments having a plaque (5) other than of
pegboard (25), an adhesive can be employed for placement as desired.
It would be best to place the device (1) near the entrance of the area of
concern at a specific site where it would not only be readily accessible
but where it would be most likely be sought out and discovered by the
blind person. Thus, an appropriate placement for a restroom would be at
the entrance very near the handle of the door. It might most desireably be
placed upon the door itself, although at places such as airline terminals
which employ only a door opening without an actual closure, the device (1)
might be placed along a specified side at designated height. At a park or
similar such public place, it might be placed upon an entrance structure
such as a gate post. In the interest of universality, placement would be a
fitting subject of legislative or administrative rule. The device should
also be located at a height to conveniently accommodate a wheelchair user
as well as a fully ambulatory person.
As discussed supra, while a plaque (5, 105) might be mounted upon a wall or
door, a separate plaque (5, 109) becomes unnecessary where the door or
wall itself (6, 25) serves that purpose. The surface (6, 25) need not
otherwise be strictly planar but could for the sake of aesthetics have a
curved aspect to it, either concave or convex. However, if so fashioned,
the curvature should not be such as to confuse the user concerning its
contents. A flat surface is, therefore, preferable. Further, the plaque
(5, 105), when mounted, need not be relegated to any particular shape such
as rectangular but might, for example, be circular, ovoid or of any other
shape. However the plaque (5, 105) or underlying surface (6, 25) itself is
deployed or shaped, there is merit in assembling the symbols (2, 103) for
the mapped area upon it approximately to scale. That feature would permit
the user to work his or her way through a roughly estimated distance
between identifiable points. As shown directly by FIGS. 1 and 2, and from
a different vantage point on FIGS. 3 and 4, some of the symbols on the
invention (1) are short rod-like extensions representing doors (27, 127),
either to the room itself or, in the case of a restroom, to the stalls
within. The rod-like extensions representing doors (27, 127) must always
be shown ajar oriented in the direction of opening.
As discussed, supra, restrooms are probably the most obvious and important
locus for the device's (1) use. Nevertheless, as pointed out above, there
are other applications which would also benefit blind users. Places other
than those previously mentioned include transportation terminals, public
meeting place entrances or forums accommodating events which might be
attended for one reason or another by blind persons Entrance points for
recreational sites might also be included, such as those for walkways into
public parks, zoos or other outdoor areas of interest to the blind as well
as the sighted. Even those blind persons who either choose to be
unaccompanied in an appropriate recreational setting or those who in an
emergency find themselves alone would benefit from a personal tactile
study of such an area's layout and contents. Objects of interest sought
for might include a public telephone, public restroom, police checking
location, an information booth or any other place one might otherwise have
to ask directions to. In all of such instances, since it is crucial that
an unaccompanied blind person become aware of the device's (1) location
before it can be used, an audio signal otherwise inobtrusive to the public
might be used in conjunction with it. Even where such a signalling device
is not employed, however, a large number of legally blind persons have
limited sight abilities which would permit them to find their way to the
device (1) in such a place.
It is anticipated the present invention's (1) palpation by a number of
users would eventually subject it to wear. It should be constructed of a
durable material, such as of sheet metal, glass, plastic, ceramic, wood or
the like and its exterior should be well protected with an overlay,
tempering, varnish or other appropriate covering.
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